Siemens SIMATIC PCS 7 - Signal Modules for Redundancy

I/O configuration variants
6.7 Connection of two-channel I/O to the PROFIBUS DP interface
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
83
HW configuration and configuring the redundant I/O
Follow the steps below to use redundant I/O:
1. Insert all the modules you want to operate redundantly. Please also observe the default
rules for configuration detailed below.
2. Configure module redundancy in HW Config in the object properties of the relevant
module.
Either search for a partner module for each module or use the default settings.
If the module is inserted in the slave with a DP address at slot X, the module in the slave
with the next Profibus address at slot X will be suggested.
3. Enter the remaining redundancy parameters for the input modules.
Note
System modifications during operation are also supported with redundant I/O. You are
not permitted to change the parameter settings for a redundant module per SFC.
Note
Always swit
ch off power to the station or rack before you remove a redundant digital input
module that does not support diagnostics functions and is not passivated. You might
otherwise passivate the wrong module. This procedure is necessary, for example, when
replaci
ng the front connector of a redundant module.
Redundant modules must be in the process image of the inputs or outputs. Redundant
modules are always accessed using the process image.
If you use redundant modules, you need to make the following settings on
the
"Cycle/clock memory" tab under "HW Config
-> CPU 41x-H properties":
"OB 85 call on I/O area access error > Only incoming and outgoing errors"
6.7.2
Signal modules for redundancy
Signal modules as redundant I/O
You can use the signal modules listed below as redundant distributed I/O connected to
PROFIBUS DP. Please note the latest information on use of the modules in the SIMATIC
PCS 7 readme.
Note
The statements on the individual signal modules in this section refer e
xclusively to their use
in redundant operation. Restrictions and special features listed here especially do not apply
to the use of the corresponding module in stand
-alone operation.
Take into account that you can only use modules of the same product version and same
firmware version as redundant pairs.